can't say exactly re the holes in question - but final drilling holes doesn't necessarily mean that they were ever match drilled. They may be pre-punched holes that just need to be final drilled to a larger size. Go back through the instructions to be sure if you are concerned.
Simpsonville, SC (SC47)
1946 Bellanca Cruisair 14-13-2 (71 YRS OLD 8/15/17)
RV14A (N14ZT), Ser#140195
IO-390 Lyc Tbolt / CS Hartzell
Dues paid 12/1/17 (USArmy 2/67-2/70)